16 results about "Alunite" patented technology

The invention relates to the technical field of mineral exploration, and discloses a method for determining a heat source center of a gold and copper ore area containing alunite minerals, which comprises the following steps of: determining a to-be-detected area of a target mining area, sampling surface rocks according to a preset grid or section, and acquiring a plurality of rock samples and corresponding original acquisition points; carrying out mineral component analysis on the plurality of rock samples, screening the alunite-containing samples to obtain a plurality of alunite-containing samples, and screening effective samples; performing elemental component analysis on the effective sample, and extracting elements and contents related to gold mineralization or copper mineralization in the effective sample; setting a potential heat source center, calculating the distance between each effective sample and the potential heat source center, introducing a distance attenuation index, establishing an objective function of the element content and the distance, and adopting a gradient descent method to perform inversion solution by minimizing the objective function to obtain coordinates of the potential heat source center, namely the determined heat source center of the gold ore or the copper ore; the method improves the accuracy of gold and copper ore area heat source center exploration.

The invention relates to a comprehensive utilization method of copper tailings, which comprises the following steps: S1, carrying out mineral separation on the copper tailings to obtain alunite, sulfur concentrate, middlings and quartz tailings; performing flotation on the quartz tailings to obtain high-purity quartz and flotation quartz; s2, the middlings in the step S1 and flotation quartz with the weight not lower than 90% are mixed, silicon oxide and iron oxide are separated, and a mixture is obtained; s3, mixing the mixture in the step S2 with the neutralized slag and limestone, and roasting at 1000-1450 DEG C to obtain cement clinker; the neutralization slag is solid waste generated after acid wastewater and / or waste gas are / is neutralized by lime. According to the method disclosed by the invention, the effective components in the middlings and the quartz tailings after the copper tailings are beneficiated can be efficiently utilized to obtain the cement meeting the quality requirement of GB 175-2023, so that the copper tailings and the neutralization slag are massively absorbed, the resource shortage is effectively relieved, the environmental problem caused by solid waste stockpiling is reduced, and the ecological benefit, the economic benefit and the social benefit are remarkable.

The invention discloses a high-performance environment-friendly curing agent based on industrial solid waste and a nano material, which comprises the following components in parts by weight: 50-70 parts of an industrial solid waste-based cementing material, 5-15 parts of a nano reinforcing material, 3-8 parts of a bio-based dispersing agent, 10-20 parts of a composite exciting agent and 5-10 parts of a micro-expanding agent, wherein the industrial solid waste-based cementing material is a mixture of steel slag, red mud and ardealite; wherein the nano reinforcing material is formed by compounding hydrophobic nano silicon dioxide and a carbon nano tube; wherein the bio-based dispersant is a loofah sponge extract; wherein the composite exciting agent is a compound of sodium sulfate, sodium silicate and sodium gluconate; wherein the micro-expanding agent is a compound of magnesium oxide and alunite. According to the high-performance environment-friendly curing agent based on the industrial solid waste and the nano material, the compressive strength of the curing agent can be improved and the shrinkage cracking of the curing agent can be reduced while the high flowability of the fluid-state cured soil is ensured.

The application discloses a short-process lithium extraction method of lithium clay ore, and belongs to the technical field of lithium extraction. 3+ The main component of the alunite formed in the form of alum is XAl3(SO4)2(OH)2 (X is Na or K). The alunite is insoluble in water and slightly soluble in sulfuric acid, has good crystallinity, and has less adsorption and entrainment of free ions, and almost no entrainment of lithium. The application fully utilizes the characteristics of the alunite, converts Al 3+ into alunite precipitation which is dissolved from the lithium ore by acid, reduces the Al / Li ratio of the leaching solution, and finally collects lithium in the form of lithium carbonate by using the calcium-magnesium resin to adsorb a small amount of calcium and magnesium ions.

The present application relates to the technical field of building materials, and particularly relates to a solid waste-based Yellow River sediment gelatinized material and a preparation method of artificial flood-prevention prepared stone. The solid waste-based Yellow River sediment gelatinized material comprises the following raw materials in parts by weight: 300-500 parts of Yellow River sediment, 80-130 parts of cinder ash, 40-80 parts of steel slag, 20-50 parts of alunite tailings, 25-55 parts of mirabilite gypsum, 0.5-1.5 parts of crack self-repairing material, and 1-3 parts of workability regulator. The artificial flood-prevention prepared stone prepared by the method has excellent mechanical properties and erosion resistance, can reduce carbon emissions and improve ecological properties, and makes the Yellow River sediment realize resource utilization.

The present invention relates to a process for extracting aluminum, potassium and alunite sulfate from sulfide copper ore tailings with the aim of reducing the alunite content in the ore tailings, to the products obtained through this process and their uses. The process includes at least a step of heat treatment of the raw material and a leaching step. The process generates a first coproduct rich in quartz and a second coproduct rich in aluminum and / or potassium sulfates. The proposed process route has a high percentage of aluminum, potassium and alunite sulfate extraction, with effective reduction of the alunite content in the ore tailings, low cost and the obtaining of coproducts that can be subsequently marketed and / or disposed of in the environment in a safe manner and contributes to the practice of circular economy.

The invention discloses a method for realizing high-valued utilization of aluminum and potassium metals in alunite based on fluosilicic acid, which comprises the following steps: stirring and leaching fluosilicic acid and alunite, and carrying out solid-liquid separation after leaching to obtain a leaching solution containing aluminum and sulfur and leaching residues containing potassium fluosilicate and silicon dioxide; crystallizing and roasting the leachate to obtain an aluminum fluoride product; a desulfurizer is added into crystallization mother liquor, sulfate radicals and fluosilicic acid are separated, the sulfate radicals are output in a sulfate form, and the fluosilicic acid is recycled for leaching operation; and the leaching residues are subjected to alkali washing, filtering and drying, silicon and potassium separation is achieved, and a potassium fluoride product and high-purity silicon dioxide are obtained respectively. According to the method, selective separation and high-value utilization of aluminum and potassium elements in the alunite are realized by utilizing the reaction of fluosilicic acid and the alunite and combining unique process configuration and operation conditions based on the property difference of the leachate and the leaching residues, and the method is simple in process flow configuration, high in resource utilization rate and good in industrial application prospect.

The invention provides a wide-temperature-range well cementation cement expansion reinforcing material as well as a preparation method and application thereof. The wide-temperature-range well cementation cement expansion reinforcing material is prepared from the following components in percentage by mass: 20 to 40 percent of sulphoaluminate cement, 20 to 40 percent of calcium sulfate, 30 to 60 percent of potassium feldspar, 1 to 10 percent of nano Al2O3, 1 to 10 percent of nano MgO, 1 to 10 percent of alunite and 1 to 10 percent of aluminoferrite cement. The wide-temperature-range well cementation cement expansion reinforcing material is suitable for well cementation operation under medium-low-temperature and ultra-high-temperature deep well conditions, and well shaft sealing integrity and well cementation quality can be improved.

The invention relates to a method for separating and recovering multiple metals from clay type lithium ore pickle liquor, and belongs to the technical field of comprehensive utilization of clay type lithium ores. According to the method, potassium hydroxide is added into the clay type lithium ore pickle liquor to precisely regulate the pH value of a system to 1.0-3.0, and then precipitation is induced, so that a lithium-rich solution and alunite residues are obtained. And the obtained lithium-rich solution is subjected to concentration and lithium precipitation, and a high-purity lithium carbonate product is obtained. The obtained alunite slag is subjected to controllable pyrolysis, a pyrolysis product is obtained, sulfur-containing flue gas is recycled for acid making, and sulfuric acid can be returned to treat clay type lithium ore. The pyrolysis product is subjected to water leaching, and after water leaching is completed, a potassium-rich solution and an aluminum oxide product are obtained through liquid-solid separation. And concentrating and crystallizing the potassium-rich solution to obtain a potassium sulfate product. Through comparison, it is found that comprehensive treatment of the clay type lithium ore pickle liquor is not involved in the prior art, the method for separating and recovering multiple metals from the clay type lithium ore pickle liquor is provided, efficient separation and comprehensive recovery of lithium, aluminum and potassium can be achieved, the resource value and economic benefits are remarkably improved, and the method is suitable for industrial production. And a new path with a great prospect is opened up for high-value utilization of the clay type lithium ore.

The invention discloses a method for realizing resource utilization of aluminum, potassium and silicon in copper tailings through beneficiation and smelting synergism, which comprises the following steps: grading copper beneficiation tailings containing alunite, dickite and quartz to respectively obtain fine particles and coarse particles, directly floating the fine particles, regrinding and reselecting the coarse particles, mixing concentrates floated twice, and taking the flotation tailings as quartz concentrates; adding fluosilicic acid into the bulk concentrate for leaching; crystallizing leachate to obtain an aluminum fluoride product, heating and concentrating crystallization mother liquor, returning fluorine-containing gas to leaching operation, adding concentrated liquor into quartz concentrate, purifying and removing iron to obtain a high-purity quartz product, and purifying and removing impurities from filtrate to obtain copperas and calcium sulfate; and grading, alkali washing, filtering and crystallizing the leaching residues in sequence to respectively obtain a high-purity silicon dioxide product and a potassium fluoride product. Based on the composition and property differences of the dickite, the alunite and the quartz in the copper-containing mine tailings, various technologies of flotation, grading and metallurgy are combined, and reduction of the copper mine tailings and high-value utilization of aluminum, potassium and silicon resources are achieved.

Provided in the present invention are a cement expansion and reinforcing material for wide temperature range cementing and a preparation method therefor. Said cement expansion and reinforcing material comprises the following components in percentage by mass: 20-40% of sulfoaluminate cement, 20-40% of calcium sulfate, 30-60% of potassium feldspar, 1-10% of nano Al2O3, 1-10% of nano MgO, 1-10% of alumite and 1-10% of ferroaluminate cement. Said cement expansion and reinforcing material is suitable for cementing operations under medium-low temperature and ultra-high temperature deep well conditions, and can improve wellbore sealing integrity and cementing quality.

The invention discloses internal curing self-leveling mortar and a preparation method thereof, and relates to the technical field of building materials, the internal curing self-leveling mortar comprises the following components by weight: 60 parts of sulphoaluminate cement, 60 parts of ceramsite, 20 parts of alunite powder, 10 parts of anhydrite, 10 parts of fly ash, 200 parts of quartz sand, 10 parts of an internal curing agent, 5 parts of latex powder, 3 parts of a leveling agent, 2 parts of sodium lignin sulfonate, and 8 parts of modified ash. The ash is prepared by modifying tannic acid; the structure stability can be maintained at high temperature, the collapse of the internal curing agent is avoided, an ash carbon skeleton forms honeycomb mesopores, a polyether chain is confined in a pore channel, steric hindrance prevents the ash from being in contact with a phosphate group, the internal curing agent and a leveling agent are physically isolated, and forced dispersion is realized; agglomeration is not caused, and reversible maintenance is still realized at high temperature.

The invention discloses artificial marble and a preparation method thereof, and the artificial marble comprises the following components in percentage by mass: 20.00%-29.00% of mineral powder, 0.00%-3.60% of I-grade fly ash, 2.80%-5.40% of desulfurized gypsum, 0.28%-1.80% of Portland cement, 0.14%-0.72% of a reinforcing agent, 0.22%-0.54% of a composite additive, 55.92%-65.68% of sand and 5.04%-7.20% of water, the composite admixture is a compound of a polycarboxylic acid water reducer and a polyether defoaming agent, the artificial marble with extremely low porosity and high strength is prepared through negative pressure stirring, vibration forming and curing, the compressive strength of 28 days is larger than 80 MPa, and the breaking strength is larger than 10 MPa. The invention relates to a high-performance inorganic artificial stone material which is obtained by fully utilizing a slag gelling system of a sulfate activator and modifying with calcined alunite.

The application provides a preparation method of a phosphogypsum-based hydraulic material based on microwave chemical compounding, comprising the following steps: S1, removing impurities and drying phosphogypsum; S2, adding coke powder, sodium sulfate and calcined alunite, uniformly mixing, and microwave irradiating the mixture; S4, adding silicate cement clinker, steel slag powder, mineral powder and fly ash, uniformly mixing, and then crushing to 380-480 meshes; S5, adding calcium aluminate, quicklime and quick-dissolving solid water glass, mixing and grinding, and the phosphogypsum-based hydraulic material is obtained. The phosphogypsum-based hydraulic material has high strength.

The present invention relates to a method for the preparation of alumina from an alunite material, the method comprising the steps of: subjecting the alunite material to an alkaline hydroxide leach step; subjecting the product of the alkaline hydroxide leach step to a solid liquid separation to produce a liquid product comprising potassium sulfate and a solid residue comprising alumina; subjecting the solid residue containing alumina to an acid leach step to produce an aluminous leach solution and separating undissolved solids; subjecting the aluminous leach solution to a crystallisation step to crystallise an aluminium salt; and subjecting the aluminium salt to a calcination step to produce alumina.

A process for preparing alumina from alunite, the process comprising the steps of: (i) grinding alunite material; (ii) washing and settling the alunite material to reduce sodium content; (iii) acid leaching and roasting the Na reduced alunite material; (iv) subjecting the product of the acid leaching and roasting step (iii) to a water leaching step to produce a liquid product comprising aluminum and potassium; (v) subjecting the liquid product of step (iv) to a precipitation step to precipitate an aluminum salt; (vi) purifying the aluminum salt; and (vii) subjecting the purified aluminum salt to a calcination step to produce alumina.